Home / 13,870.85-20,808.49-4,510.15

Finding the Fourth Proportional to 13,870.85, 20,808.49 and 4,510.15

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Solution

The fourth proportional to 13,870.85, 20,808.49 and 4,510.15 is: 6,765.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,870.85 : 20,808.49 = 4,510.15 : x
  2. Step 2: Convert to fraction form
    13,870.85/20,808.49 = 4,510.15/x
  3. Step 3: Cross multiply
    13,870.85x = 20,808.49 × 4,510.15
  4. Step 4: Simplify right side
    13,870.85x = 93,849,411.17
  5. Step 5: Solve for x
    x = 93,849,411.17/13,870.85
  6. Step 6: Final answer
    x = 6,765.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.